Explanation

Restriction endonucleases are the enzymes, which cut a DNA molecule within certain specific sites that have specific base sequence, e.g., Hae III, Eco RI, Bam II, Hind II, Pst I, etc. DNAse-I is not a restriction endonuclease enzyme. DNA polymerase-III synthesizes DNA, while DNA polymerase-I erases printer and fills gaps during DNA replication.